Guesstimate: How many airplanes take off in a day from Indira Gandhi International Airport.

<aside> 💡 Considerations

</aside>

Consider only passenger flights
Number of runways = 4
Number of take off = 50% of total flights

<aside> ✅ Calculations

</aside>

Total available hours = 24 hours
Average Runway Capacity = 30 operations per hour
During peak hours, all 4 runways will be working at capacity
During non-peak hours, only 2 runways will be working at capacity

Hours	Working runways	Flights take off per runway per hour	total Flights take off in operational hours
Peak Hours (8 hr)	4	50% of 30 = 15	4 * 15 * 8 = 480
Non-peak Hours (16 hr)	2	50% of 30 = 15	2 * 15 * 16 = 480

Total flights take off in a day from Indira Gandhi International Airport = 960 flights

<aside> 📌 Sanity check

</aside>

“The airport currently handles 1,400-1,500 daily flights on an average. While an official estimate is yet to be finalized people in the know said it is likely to reach around 2,000 when all four runways become operational.” - Livemint (Jul 2023)

So, Number of take off = 1000 (approximately )